that is 39-year-old gerardo hernandez. he was a tsa agent. in fact, he was the first tsa agent ever shot and killed in the line of duty. he was also the father of two. at the same time we are learning more about the gunman. police say 23-year-old paul ciansio pulled out a rifle and started shooting. >> shooting was on the left-hand side from where we heard the gun shot. it was horrible, you know. it was vietnam all again. >> authorities say it could have been worse. that's because he was found with more than 100 rounds left when he was finally taken into custody. witnesses think he was targeting tsa agents. they say he walked up to them, asked them if they were working for tsa. when he was taken into custody he had a had written note that said he wanted to harm tsa agents. he is from new jersey. apparently earlier in the week he texted his brother in new jersey saying he wanted to try to kill himself. authorities looking into that. he was shot before taken into custody, but he is still alive and they are trying to figure out exactly what his